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David Humphries

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Everything posted by David Humphries

  1. David Humphries
    leaf miner of London plane - Phyllonorycter platani .
  2. David Humphries
    I would imagine these are C. micaceus Ben Coprinus (Coprinellus) micaceus - Glistening Inkcap - David Humphries’s Fungi Directory - Arbtalk.co.uk | Discussion Forum for Arborists .
  3. David Humphries
    yesterday Jules .
  4. David Humphries
    One option is to winch it in a bit more and allow it to grow new roots into the bank. .
  5. David Humphries
    Yes Fred Sandy soil at this point of the site. .
  6. David Humphries
    It's not currently shared data. Moves are afoot to bring it all together. These things take time. .
  7. David Humphries
    Some of us have been doing this for a good while in the UK. We have 7 years worth. Never enough people recording of course, but there is a data set out there for UK tree failures. We signed up to the International Tree Failure Database, but it didn't really get going over here. .
  8. David Humphries
    Pleurotus sp (possibly the light form of P. ostreatus) here on birch. .
  9. David Humphries
    I understand Jeremy Barrell will release a paper on SBD later on this year. (imagine it will coincide with this years AA conference) Looks to be focussing on frequency of the phenomenom. & hopefully tackling public engagement. and how they see their own part in tree risk awareness Should promote healthy debate on practices of tree risk management. .
  10. David Humphries
    bees making the most out of a cavity that has Fistulina hepatica associated with it. .
  11. David Humphries
    Inonotus hispidus here again, this time on London plane. Again probably having been cavitated by woodpeckers and taken over by ring necked parakeets .
  12. David Humphries
    Inonotus hispidus here on ash, providing the white rot that has been taken advantage of originally by a woodpecker, but now by ring necked parakeets. .
  13. David Humphries
    Rigidoporus ulmarius here on horse chestnut, dusting its surroundings with white spore..... .
  14. David Humphries
    some of it is in the water but mostly the bulk is on the edge of the pond. The swans were not particularly..........'bovered' .
  15. David Humphries
    6 years on and without a follow up reduction, the inevitable has occured .
  16. David Humphries
    a willow that has had Ganoderma resinceum & its associaed white rot, for a number of years. in 2008 we reduced the canopy directly above the target of the well used tarmac path below, to shift the weight & center of gravity more toward the pond. The reason for retention as opposed to removal at that time, was mostly for continous cover for the swans that nest along this bank each year. .
  17. David Humphries
    another large burr, this time on oak buttress..... .
  18. David Humphries
    perhaps releasing would have benefits Guy, but not one of my trees. This one sits in woodland on a National Trust site, unlikely to be seen as an issue. What intrigued me about this one was incompatability of of host and girdler. The oak is never likely to absorb its strangular? Inonotus dryadeus colonisation less a case of round the corner, more like in full throttle .
  19. David Humphries
    Yew root girdling an oak buttress tree looks content with the situation .
  20. David Humphries
    a corker I came across at Ickworth today...... .
  21. David Humphries
    a ginormous Liriodendron burr
  22. David Humphries
    a whole world to discover these are both really good.... British Boletes: with key to species £19.95 - Fungi - General Books on botany from Summerfield Books Home « boletales.com .
  23. David Humphries
    one of the Bolete (possibly Xerocomellus) sp mycorrhizal on the roots .
  24. David Humphries
    Poor women ! .
  25. David Humphries
    I've only seen evidence of it in East Anglia so can't offer anything on its progressive spread. http://arbtalk.co.uk/forum/tree-health-care/41768-poplar-hornet-moth.html I'd imagine Nigel Straw at Forest Research would be particularly interested. He co-wrote a paper in the AA journal a while back Arundell, J.C. and Straw, N.A. (2001). Hornet clearwing moth (Sesia apiformis [Clerck]) and dieback of poplars in eastern England. Arboricultural Journal 25(3): 235-253. Contact details.... Forest Research - Nigel Straw .

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